Device and method for compensating phase distortion

Details Device and method for compensating phase distortion Device and method for compensating phase distortion

H - Electricity

03

F

H03F 1/32 (2006.01) H03F 3/24 (2006.01)

Patent

CA 2259315

The present invention relates to a method of compensating for the phase distortion that occurs in a power amplified output signal in response to the output power of a power amplifier. The invention also relates to a phase distortion compensating device. The device includes a phase-locking and upconversion loop (30-39) which is connected to the input of a power amplifier (40). Briefly, the solution involves feeding a part of the signal (e pha) to be amplified back to a circuit (35) which combines this first mentioned signal with a part of the amplified signal (e out) fed back from the output of the power amplifier (40), so as to achieve a smooth transition in the dominance of one signal over the other signal when the two signals are combined to obtain a new feedback signal (e fdb) from the combining circuit (35).

L'invention concerne un procédé servant à corriger la distorsion de phase qui apparaît dans un signal de sortie amplifié en puissance en réaction à la puissance de sortie d'un amplificateur de puissance. Elle concerne également un dispositif servant à corriger une distorsion de phase. Ce dispositif comprend une boucle de verrouillage de phase et de conversion vers le haut (30-39) reliée à l'entrée d'un amplificateur de puissance (40). La solution consiste à réalimenter un circuit (35) en une partie du signal (epha) à amplifier, ce qui combine le premier signal avec une partie du signal amplifié (eout) renvoyé depuis la sortie de l'amplificateur de puissance (40), de manière à effecteur une transition douce de la dominance d'un signal par rapport à l'autre signal quand les deux signaux sont combinés afin d'obtenir un nouveau signal de rétroaction (efdb) depuis le circuit de combinaison (35).

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